[RFC PATCH v2 08/20] hw/arm/smmuv3-accel: Provide get_address_space callback

[Shameer Kolothum via]

Also introduce a struct SMMUv3AccelDevice to hold accelerator specific
device info. This will be populated accordingly in subsequent patches.

Signed-off-by: Shameer Kolothum <shameerali.kolothum.th...@huawei.com>
---
 hw/arm/smmuv3-accel.c         | 36 +++++++++++++++++++++++++++++++++++
 include/hw/arm/smmuv3-accel.h |  4 ++++
 2 files changed, 40 insertions(+)

diff --git a/hw/arm/smmuv3-accel.c b/hw/arm/smmuv3-accel.c
index 1471b65374..6610ebe4be 100644
--- a/hw/arm/smmuv3-accel.c
+++ b/hw/arm/smmuv3-accel.c
@@ -11,6 +11,40 @@
 #include "hw/arm/smmuv3-accel.h"
 #include "hw/pci/pci_bridge.h"
 
+static SMMUv3AccelDevice *smmuv3_accel_get_dev(SMMUState *s, SMMUPciBus *sbus,
+                                                PCIBus *bus, int devfn)
+{
+    SMMUDevice *sdev = sbus->pbdev[devfn];
+    SMMUv3AccelDevice *accel_dev;
+
+    if (sdev) {
+        accel_dev = container_of(sdev, SMMUv3AccelDevice, sdev);
+    } else {
+        accel_dev = g_new0(SMMUv3AccelDevice, 1);
+        sdev = &accel_dev->sdev;
+
+        sbus->pbdev[devfn] = sdev;
+        smmu_init_sdev(s, sdev, bus, devfn);
+    }
+
+    return accel_dev;
+}
+
+static AddressSpace *smmuv3_accel_find_add_as(PCIBus *bus, void *opaque,
+                                              int devfn)
+{
+    SMMUState *s = opaque;
+    SMMUPciBus *sbus;
+    SMMUv3AccelDevice *accel_dev;
+    SMMUDevice *sdev;
+
+    sbus = smmu_get_sbus(s, bus);
+    accel_dev = smmuv3_accel_get_dev(s, sbus, bus, devfn);
+    sdev = &accel_dev->sdev;
+
+    return &sdev->as;
+}
+
 static int smmuv3_accel_pxb_pcie_bus(Object *obj, void *opaque)
 {
     DeviceState *d = opaque;
@@ -30,6 +64,7 @@ static void smmu_accel_realize(DeviceState *d, Error **errp)
     SMMUv3AccelState *s_accel = ARM_SMMUV3_ACCEL(d);
     SMMUv3AccelClass *c = ARM_SMMUV3_ACCEL_GET_CLASS(s_accel);
     SysBusDevice *dev = SYS_BUS_DEVICE(d);
+    SMMUState *bs = ARM_SMMU(d);
     Error *local_err = NULL;
 
     object_child_foreach_recursive(object_get_root(),
@@ -41,6 +76,7 @@ static void smmu_accel_realize(DeviceState *d, Error **errp)
         error_propagate(errp, local_err);
         return;
     }
+    bs->get_address_space = smmuv3_accel_find_add_as;
 }
 
 static void smmuv3_accel_class_init(ObjectClass *klass, void *data)
diff --git a/include/hw/arm/smmuv3-accel.h b/include/hw/arm/smmuv3-accel.h
index 56fe376bf4..86c0523063 100644
--- a/include/hw/arm/smmuv3-accel.h
+++ b/include/hw/arm/smmuv3-accel.h
@@ -16,6 +16,10 @@
 #define TYPE_ARM_SMMUV3_ACCEL   "arm-smmuv3-accel"
 OBJECT_DECLARE_TYPE(SMMUv3AccelState, SMMUv3AccelClass, ARM_SMMUV3_ACCEL)
 
+typedef struct SMMUv3AccelDevice {
+    SMMUDevice  sdev;
+} SMMUv3AccelDevice;
+
 struct SMMUv3AccelState {
     SMMUv3State smmuv3_state;
 };
-- 
2.34.1